下面代码执行结果正确的是classBaseclass{publicvirtualintShow(){return5;}}classDerivcedlcass:Baseclass{publicnewintShow(){return6;}}classDerivcedlcass1:Baseclass{publicoverrideintShow(){return7;}}classProgram{staticvoidMain(string[]args){Baseclass[]a=newBaseclass[2];a[0]=newDerivcedlcass();a[1]=newDerivcedlcass1();Console.WriteLine("a[0]={0}",a[0].Show());Console.WriteLine("a[1]={0}",a[1].Show());}}

A. a[0]=7,a[1]=6
B. a[0]=6,a[1]=5
C. a[0]=5,a[1]=7
D. a[0]=7,a[1]=5